shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F100RB/port_api.c@251:de9a1e4ffd79, 2014-07-08 (annotated)

Committer:
mbed_official
Date:
Tue Jul 08 14:15:07 2014 +0100
Revision:
251:de9a1e4ffd79
Parent:
250:a49055e7a707
Child:
285:31249416b6f9
Synchronized with git revision b0ac1e3485a9aa1cb98d1ca68df9d1cdbcd6ce63



Full URL: https://github.com/mbedmicro/mbed/commit/b0ac1e3485a9aa1cb98d1ca68df9d1cdbcd6ce63/



Revert "error.h -> mbed_error.h"

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 126:549ba18ddd81 1 /* mbed Microcontroller Library
mbed_official 126:549ba18ddd81 2 *******************************************************************************
mbed_official 126:549ba18ddd81 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 126:549ba18ddd81 4 * All rights reserved.
mbed_official 126:549ba18ddd81 5 *
mbed_official 126:549ba18ddd81 6 * Redistribution and use in source and binary forms, with or without
mbed_official 126:549ba18ddd81 7 * modification, are permitted provided that the following conditions are met:
mbed_official 126:549ba18ddd81 8 *
mbed_official 126:549ba18ddd81 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 126:549ba18ddd81 10 * this list of conditions and the following disclaimer.
mbed_official 126:549ba18ddd81 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 126:549ba18ddd81 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 126:549ba18ddd81 13 * and/or other materials provided with the distribution.
mbed_official 126:549ba18ddd81 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 126:549ba18ddd81 15 * may be used to endorse or promote products derived from this software
mbed_official 126:549ba18ddd81 16 * without specific prior written permission.
mbed_official 126:549ba18ddd81 17 *
mbed_official 126:549ba18ddd81 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 126:549ba18ddd81 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 126:549ba18ddd81 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 126:549ba18ddd81 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 126:549ba18ddd81 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 126:549ba18ddd81 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 126:549ba18ddd81 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 126:549ba18ddd81 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 126:549ba18ddd81 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 126:549ba18ddd81 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 126:549ba18ddd81 28 *******************************************************************************
mbed_official 126:549ba18ddd81 29 */
mbed_official 126:549ba18ddd81 30 #include "port_api.h"
mbed_official 126:549ba18ddd81 31 #include "pinmap.h"
mbed_official 126:549ba18ddd81 32 #include "gpio_api.h"
mbed_official 251:de9a1e4ffd79 33 #include "error.h"
mbed_official 126:549ba18ddd81 34
mbed_official 126:549ba18ddd81 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 126:549ba18ddd81 36
mbed_official 126:549ba18ddd81 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 126:549ba18ddd81 38
mbed_official 126:549ba18ddd81 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 126:549ba18ddd81 40 // low nibble = pin number
mbed_official 126:549ba18ddd81 41 PinName port_pin(PortName port, int pin_n) {
mbed_official 126:549ba18ddd81 42 return (PinName)(pin_n + (port << 4));
mbed_official 126:549ba18ddd81 43 }
mbed_official 126:549ba18ddd81 44
mbed_official 126:549ba18ddd81 45 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 126:549ba18ddd81 46 uint32_t port_index = (uint32_t)port;
mbed_official 126:549ba18ddd81 47
mbed_official 126:549ba18ddd81 48 // Enable GPIO clock
mbed_official 126:549ba18ddd81 49 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 126:549ba18ddd81 50 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 126:549ba18ddd81 51
mbed_official 126:549ba18ddd81 52 // Fill PORT object structure for future use
mbed_official 126:549ba18ddd81 53 obj->port = port;
mbed_official 126:549ba18ddd81 54 obj->mask = mask;
mbed_official 126:549ba18ddd81 55 obj->direction = dir;
mbed_official 126:549ba18ddd81 56 obj->reg_in = &gpio->IDR;
mbed_official 126:549ba18ddd81 57 obj->reg_out = &gpio->ODR;
mbed_official 126:549ba18ddd81 58
mbed_official 126:549ba18ddd81 59 port_dir(obj, dir);
mbed_official 126:549ba18ddd81 60 }
mbed_official 126:549ba18ddd81 61
mbed_official 126:549ba18ddd81 62 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 126:549ba18ddd81 63 uint32_t i;
mbed_official 126:549ba18ddd81 64 obj->direction = dir;
mbed_official 126:549ba18ddd81 65 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 126:549ba18ddd81 66 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 126:549ba18ddd81 67 if (dir == PIN_OUTPUT) {
mbed_official 126:549ba18ddd81 68 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_Out_PP, 0));
mbed_official 126:549ba18ddd81 69 }
mbed_official 126:549ba18ddd81 70 else { // PIN_INPUT
mbed_official 126:549ba18ddd81 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 126:549ba18ddd81 72 }
mbed_official 126:549ba18ddd81 73 }
mbed_official 126:549ba18ddd81 74 }
mbed_official 126:549ba18ddd81 75 }
mbed_official 126:549ba18ddd81 76
mbed_official 126:549ba18ddd81 77 void port_mode(port_t *obj, PinMode mode) {
mbed_official 126:549ba18ddd81 78 uint32_t i;
mbed_official 126:549ba18ddd81 79 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 126:549ba18ddd81 80 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 126:549ba18ddd81 81 pin_mode(port_pin(obj->port, i), mode);
mbed_official 126:549ba18ddd81 82 }
mbed_official 126:549ba18ddd81 83 }
mbed_official 126:549ba18ddd81 84 }
mbed_official 126:549ba18ddd81 85
mbed_official 126:549ba18ddd81 86 void port_write(port_t *obj, int value) {
mbed_official 126:549ba18ddd81 87 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 126:549ba18ddd81 88 }
mbed_official 126:549ba18ddd81 89
mbed_official 126:549ba18ddd81 90 int port_read(port_t *obj) {
mbed_official 126:549ba18ddd81 91 if (obj->direction == PIN_OUTPUT) {
mbed_official 126:549ba18ddd81 92 return (*obj->reg_out & obj->mask);
mbed_official 126:549ba18ddd81 93 }
mbed_official 126:549ba18ddd81 94 else { // PIN_INPUT
mbed_official 126:549ba18ddd81 95 return (*obj->reg_in & obj->mask);
mbed_official 126:549ba18ddd81 96 }
mbed_official 126:549ba18ddd81 97 }
mbed_official 126:549ba18ddd81 98
mbed_official 126:549ba18ddd81 99 #endif